Improvement in stops for engine-lathes



C. A. COOLEY.

STQPS FOR ENGINE-LATHES No. 193350. I Patented. Aug. 7, .1877.

ATTORNEYS.

N-PETERS. PHOTO-UTHOGRAPHEE, WBSHINGTON. D C. v

Unrrn SArEs CHARLES A. cooLEY, on EAST nAnTFoamoonNncrrcUT;

IMPROVEMENT IN STOPS FOR ENGlNE-LATHES;

Specification forming part of Letters Patent No. 193,850, dated August 7, 1877 application filed I June 25, 1877.

To all whom it may concern:

Be it known thatI, CHARLES A. Goonnv, of East Hartford, in the county of Hartford and State of Connecticut, have invented a new and Improved Stop for Engine-Lathes, of which the following is a specification:

Figure 1 is an end elevation of a portion of a lathe-head having. my improvement attached. Fig. 2 is a side elevation of the same, in section, on line 00 as in Fig. 1. Figs. 3 and 4 are detail views of the stopping mechanism.

Similar letters of reference indicate correspindle B, upon which is placed the usual pinion G. D D are intermediate pinions, placed on studs projecting from the lever E, which lever is journaled on the same center as the wheel a, with which either of the pinions D D may be made to engage by moving the said lever. This reversing-gear is nearly the same on all lathes.

The handle that is usually placed on the end of the lever E is dispensed with, and the said lever is slotted longitudinally to receive a stud projecting from a disk of the stopping mechanism.

I F is a barrel, attached to the lathe-head by means of screws. This barrel is connected with a disk, G, by a sleeve, a, and a shaft, H, passes through the barrel and sleeve, and to it a disk, -I, is attached, being held in place by the nut b, which is let into the face of the disk, and is provided with nicks for receiving a screw-driver. The said disk is prevented from turning on the shaft by a feather.

Upon the opposite end of the shaft H, and in the open end of the barrel F, a disk, K, is

placed. This disk is notched to receive a spring-bolt, L, that slides in a guide formed at the side of the'barrel. The bolt extends through the fixed head of the barrel, and in it a pin is placed, which is engaged by a curved arm, M, that extends upward from a head, N, that slides in ways on the bed of the lathe.

A spring, 0, surrounds the shaft H, and is attached to the barrel F, and connected with upon it an arm, g, is placed, which is engaged by the tool-carriage of the lathe. 1

The operation is as follows:

the arm 9 at the instant the work is done. The movement of the head N withdraws the bolt L from the notch in the disk K. The spring 0 now turns the shaft H, and, consequently, the disk I, which carries the Stud 6, by which the lever E is moved so as to throw the pinion I) out of gear and stop the feed of the lathe. I

When a new piece is put in the lathe the feeding mechanism is set in operation by turning the disk I, by means of the handle h, which is attached to it, when the bolt L again engages the disk K, and the operation is repeated.

I do not limit or confine myself to the ex= act form or position of the parts composing my improvement, as they may be varied without departing from my invention.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. The combination, with the lever E, of the disk .1, having the pin 0, a spring, a de- A piece of 4 work is placed inthe lathe, and the rod P is adjusted so that the tool-carriage will strike tent, and a tripping device, substantially as arm g, and the adjustable head N; in combiand for the purpose herein shown and denation, substantially as herein shown and described. scribed.

2. The barrel F, having formed on it the CHARLES A. OOOLEY. sleeve a and disk G, the shaft H, spring 0, Witnesses: disks K I, spring-bolt L, and the tripping MILLARD E. LEWIS, device, consisting of the rod P, having the JOHN ALGER. 

